Feature Request: Can we get Subdiv3D (Voronoi for Point3f)?

[jasjuang]

System information (version)

• OpenCV => Latest
• Operating System / Platform => Ubuntu 18.04
• Compiler => GCC 7

Detailed description

Currently, OpenCV provides cv::Subdiv2D and it allows us to construct the Voronoi diagram with getVoronoiFacetList, and the OpenCV version runs a lot faster than what I implemented myself. However, currently, it is only limited to 2d points. I think it would be amazing if there's something like cv::Subdiv3D that can construct the Voronoi diagram with 3d points.